What type of insulation is commonly used for soundproofing purposes?

Batted insulation is often the material of choice for soundproofing purposes due to its design and effectiveness in absorbing sound waves. This type of insulation typically comes in large rolls or batts and is made from materials like fiberglass or mineral wool, which are specifically engineered to reduce sound transmission between rooms or from outside noise sources. Its structure allows it to fill gaps and spaces in walls, ceilings, and floors effectively, thereby helping to minimize sound transfer.

Although other types of insulation, such as fiberglass, cellulose, and foam board, serve important functions in thermal insulation, they are not primarily recognized or widely used for soundproofing. Foam board insulation, for instance, is typically utilized for its high insulation value and moisture resistance rather than acoustical benefits. Cellulose insulation has some sound-dampening properties but is mainly valued for energy efficiency. Therefore, while these other materials can contribute marginally to sound control, batted insulation stands out as the preferred option for effective soundproofing.